Metal lath.



M. KUHNE.

METAL LATH.

APPLICATION FILED MAY 11,1911.

METAL LATH.

APPLICATION FILED MAY 11, 1911.

Patented Oct. 22

2 SHEETS-SHEET 2.

z xm d w h C o o w n MARTIN K'U'HNE, or BROOKLYN, NEW, Yo ax.

METAL LATE.

Specification of Letters Patent.

Patented'flct. 22,1912.

Application filed May 11, 1911. Serial No. 626,548.

To all whom 'it may c'oncern;

Be it known that I, MARTIN Kr'iHNE, a citizen of the United States, and a resident of Brooklyn, in the county of Kings, State of New York, have invented certain new and useful Improvements in Metal Laths, of which the following is a specification.

This invention relates to metal laths which are provided with perforations through which the mortar passes and which serve to support the mortar in position. Hitherto in the sheet metal lat-hs the openings served to permit the passage of the mortar therethrough when such mortar was applied to one side of the lath but only comparatively little mortar passed through the openings whereby very poor sustaining qualities were obtained, the disadvantage being also that the rear side of the lath was provided with a comparatively thin lining of mortar, which would easily crack and otherwise not be as efficient as the front side.

My invention has for its object to provide a'sheet metal lat-h which will act as a frame to the mortar and which by reason of its construction will cause themortar applied to the front side of the lath to pass through the lath so as to distribute itself completely and evenly on the other side of the. lath and form at that side a lining covering the entire rear side of the lath in a 'thick layer substantially the same as that ofthe front side.

The invention for this purpose consists of a sheet metal lat-h formed of a plate corrugated to form hills and valleys or alternately raised and depressed portions, with openings in the hills and valleys of said corrugations and with upturned lips inclined toward each other in the valleysand downturned lips inclined toward each other in the hills so arranged that when the mortar passes through the lath from the front side it will by reason of thelinclined walls of the corrugations fiow alongf'theinclined portions at the rear of the lath and distribute itself on the rear side so as to form a lining. @n the hardening .of. the mortar the frontlining and the rear lining 5 0 with the skeleton or sheet metal 'laththerebetween will form substantially an integral .2 and wall with equal thickness of mortar or approximately so.

y invention consists further in providmg a sheet metal lath with alternate depresslons and elevations forming strengthening ribs, then depressing each alternate rib whereby the parts forming the ribs increase in width, and permit thereby the sheet to assome a truss formation.

In the accompanying drawings, Figure 1 shows a plan-view of a portion of my improved metal lath, Fig. 2 is a vertical transverse section taken on line 2, 2, of Fig. 1, F g. 3 is an enlarged view of part of Fig. 2, Fig. 4 is a plan-view of a lath like that shown in Fig. 1 combined with truss-shaped strengthening'ribs, Fig. 5 is a vertical transverse section taken on line 5, 5, Fig. 4, showing the strengthening rib co-aoting with the corrugated portion, Fig. 6 is a plan-view of a sheet metal lath showing raised and lowered portions thereof forming a trussline, and Fig. -7 is a vertical transverse section taken on line 7, 7, of Fig. 6.

Similar letters of reference indicate cor" responding parts.

Referring more particularly to Fig. 1, my improved lath is composed of a sheet metal piece 10 properly corrugated so-as to form bills 11 and valleys 12 throughout the width of the lath, the corrugations running on lines parallel to each other in the longitudinal direction of the lath. Each of the lining arranged to forma truss, arid corrugations, both the hills and valleys areprovided with slots or openings 13 obtained.

by punching out in eitherdirection the metal of the lath. The metal is puriched at v the valleys in upward direction .and at thehills in downward direction, so as to cause the remaining metal forming lips 14 to be upset in opposite direction, said lips in both cases being-inclined toward each other so that the remaining metal when looked at in ,vertical transverse section as shown Figs.

have a-configurat ion substanward each other from opposite sidesef the fabric render the same reversible, that is the fabric is usable either side up with'the same effect. namely the upturned lipsdnciined toback would form one continuous line with the body-portion of the lath and would fill the entire slot. \Vhen plaster is applied at one side of the piece it will pass through the slots 13 and will flow along the inclined portions of the S by reason of its inclination and will distribute itself equally along I this surface at the rear ofthe piece 10 and a wall or ceiling,

cover thereby the rear portion of the piece completely and form a complete rear linmg. The upset portions or lips serve to facilitate the flow and also by reason of their upsetting serve to grip with the mortar securely. By thus applying the mortar on the front side of the lath, the rear side also becomes lined and by thisa doublelined lath is obtained, giving thereby a comparatively thick mortar wall held in position by the lath which thus acts as a skeleton to the wall.

In order to give the desired and necessary stiffness to the lath, parts of the corrugations are omitted and the metal is, formed 'into strengthening ribs 17. These ribs are disposed at intervals of considerable distance'embracing a'plura ity of the hills and valleys and are integrally united with and gradually pass into the corrugations of the sheet metal piece and by reason of not being slotted and having also the cross sectional shape shown in F ig. 5 which is'substantiallythat of a truss, great strengthening qualities are given to the lath. The ribs 17 serve furthermore very advantageously to enable the lath to be applied to thebeams by wires and similar fastening means or by nails as shdwn at 18 in Figs. 4 and 5.

In Figs. 6 and 7 is shown another part of my invention in which a sheet of sheetmetal is provided at intervals with strengthening ribs 21 and 22'projecting alternately in opposite directions. Each of these ribs is in the'form' of a U-shaped bend of the fabric, the closed end forming the peaks of the rib and the open end the base thereof. In placing this lathing in position to form the ribs are preferably somewhat depressed by spreading at their open ends, as shown in Fig. 7, the dotted lines 23 indicating the initial position and the full lines showing'th'e normal position.

The ribs 21 and 22 are of substantially trussshape and add to the strength of the struc- The fabric between the ribs 1s mture.

intermediate material thus assumes the shape of a truss. This again greatly adds to the. resisting qualities of the structure and by filling in the space on either side a very strong wall is secured. It will be noticed that by reason of the construction proposed my improved lath enables a Wall to be produced equally strong at either side.

Thebody of the lath between the elevations and depressions forms a truss and the embodiment shown in Fig. 7 is formed corrugated, similar to the forms shown in Figs. 1 to 5. It is clear, however, that this part of the invention may be applied to other forms of lath than the corrugated form. Wires hold the parts in osition, the main Wires-29 being at each si e of the lath and wires 20 connecting the elevations and depressions with the main-wires. By this, the lath retains the truss line formation.

I have shown and described an embodiment of my invention, but changes may be Patent: a

1. A metallic lathing comprising a reversible corrugated sheet metal body having hills and valleys, the'hills having plaster" openings provided on their opposite sides with downturned lips inclined toward each other and the valleys being provided with plaster openings having on their opposite sides upturned lips inclined toward each other.

2. A metallic lathing comprising a reversible corrugated sheet metal body alike on either side andhaving hills and valleys, the hills being provided with plaster openings having I turned lips inclined toward each other and the valleys being provided with openings having on their opposite si es u turned lips inclined toward each other, t e tops of the valleys being in straight parallel planes.

3. A sheet metal lath comprising a corrugated body having plaster openings in the hills and valleys and lips at the sides and ends of said openings, the lips of the hills being inclined downward and toward other and the lips of the valleys'being 1nclined upward and toward each other.

4. A sheet metal lath comprising a corrugated body having plaster openings in" the hills and valleys and lips at the s1des.. of said openings, the lips of the hills being chned alternately in opposite directions and claim as new and desire to secure by Letters Y on their opposite sides downlaster hills and the bottoms of the each inclined downward and toward each other as my and the lips of the Valleys being inclined presen upward and toward each other, and strengthening ribs projecting in opposite 5 directions from said corrugated body and forming a truss-like structure.

In testimony, that I claim the foregoing invention, I have signed my name in ce of tWo subscrlblng wltnesses.

MARTIN KUHNE.

Witnesses:

JOHN MURTAGH, L. J! MURPHY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. C. 

